<template>
	<view class="login-container">
		<!-- 图标 -->
		<uni-icons type="contact-filled" size="100" color="#AFAFAF"></uni-icons>

		<!-- 按钮 -->
		<button type="primary" class="btn-login" open-type="getUserInfo" @getuserinfo="getUserInfo">一键登录</button>

		<!-- 提示 -->
		<text class="tip-text">登录后尽享更多权益</text>
	</view>
</template>

<script>
	import {mapMutations ,mapState} from "vuex"
	
	export default {
		data() {
			return {

			};
		},
		computed:{
			...mapState('m_user',['redirectInfo'])
		},
		methods: {
			...mapMutations('m_user',['updateUserInfo' , 'updateToken','updateRedirectInfo']),
			
			getUserInfo(e){
				console.log(e);
				
				if(e.detail.errMsg === 'getUserInfo:fail auth deny')return uni.$showMsg('您取消了登录授权')
				
				console.log(e.detail.userInfo);
				this.updateUserInfo(e.detail.userInfo)
				
				this.getToken(e.detail)
			},
			async getToken(info){
				// 获取code对应的值
				const [err,res] = await uni.login().catch(err => err)
				
				if(err || res.errMsg !== 'login:ok') return uni.$showMsg("登陆失败")
				
				// console.log(res.code);
				// console.log(info);
				// 准备参数
				const query ={
					code : res.code,
					encryptedData : info.encryptedData,
					iv : info.iv,
					rawData : info.rawData,
					signature : info.signature
				}
				
				const {data : loginResult} = await uni.$http.post("/api/public/v1/users/wxlogin",query)
				if (loginResult.meta.status !== 400) return uni.$showMsg('登录失败！')
				  
				// 2. 更新 vuex 中的 token
				this.updateToken(loginResult.message.token)
				this.navigateBack()
			},
			navigateBack(){
				if(this.redirctInfo && this.redirctInfo.openType === 'switchTab'){
					uni.switchTab({
						url:this.redirctInfo.from,
						complete: () => {
							this.updateRedirectInfo(null)
						}
					})
				}
			}
		}
	}
</script>

<style lang="scss">
	.login-container {
		height: 750rpx;
		background-color: #f8f8f8;
		display: flex;
		flex-direction: column;
		justify-content: center;
		align-items: center;

		.btn-login {
			width: 90%;
			border-radius: 100px;
			margin: 15px 0;
			background-color: #87ceeb;
		}

		.tip-text {
			font-size: 12px;
			color: gray;
		}
	}
</style>
